/*
 * Copyright 2011 Sina.
 *
 * Licensed under the Apache License and Weibo License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.open.weibo.com
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.kunpeng.weibo.sina.http;

import com.kunpeng.weibo.sina.beans.Oauth2AccessToken;
import com.kunpeng.weibo.sina.beans.WeiboParameters;

/**
 * Encapsulation a http accessToken headers. the order of weiboParameters will
 * not be changed. Otherwise the signature should not be calculated right.
 * 
 * @author ZhangJie (zhangjie2@staff.sina.com.cn)
 */
public class Oauth2AccessTokenHeader extends HttpHeaderFactory {

	@Override
	public String getWeiboAuthHeader(String method, String url, WeiboParameters params, String app_key, String app_secret, Oauth2AccessToken token) {
		if (token == null) {
			return null;
		}
		return "OAuth2 " + token.getAccessToken();

	}
}
